Black out

Origin

The phrase 'black out' as a loss of consciousness dramatically entered the lexicon in the early 20th century, drawing its vivid power from the literal experience of the world going dark. Imagine a sudden drop in blood pressure or a sharp blow: the lights dim, then vanish, as vision disappears and awareness fades completely. This internal plunge into darkness found a powerful echo in the widespread 'blackouts' enforced across cities during wartime, particularly during World War I and II. Streets, homes, and entire landscapes were deliberately plunged into an artificial night to hide from enemy bombers. The sudden, enforced external darkness became a stark parallel for the internal cessation of light and consciousness, making 'black out' a compelling and universally understood description for losing one's senses.